Karmic Guide + Cavalier of Dawn + Animate Dead + Phyrexian Altar

Karmic Guide

Cavalier of Dawn

Animate Dead

Phyrexian Altar

How it works

1. Cast Animate Dead by paying 1, targeting Karmic Guide in your graveyard.
2. Animate Dead triggers, returning Karmic Guide to the battlefield.
3. Karmic Guide triggers, returning Cavalier of Dawn from your graveyard to the battlefield.
4. When Cavalier of Dawn enters, it triggers itself, targeting nothing.
5. Activate Phyrexian Altar by sacrificing Karmic Guide, adding .
6. Animate Dead is put into your graveyard as a state-based action.
7. Activate Phyrexian Altar by sacrificing Cavalier of Dawn, adding .
8. Cavalier of Dawn's last ability triggers, returning Animate Dead from your graveyard to your hand.
9. Repeat.